CN116961901A - Investment evidence-preserving method and system based on blockchain technology - Google Patents
Investment evidence-preserving method and system based on blockchain technology Download PDFInfo
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Abstract
The invention discloses an investment evidence-preserving method based on a blockchain technology, which comprises the following steps: s1, verifying a client; s2, the client accesses the block chain server and transmits data to the block chain server; s3 is used for broadcasting the received data to the nodes by the blockchain server. The investment evidence-depositing method and system based on the blockchain technology provided by the invention ensure that the evidence-depositing cannot be tampered by linking the investment identity, information, assets, transaction and behavior, can be used as a cushioning evidence when disputes are generated, ensure that the whole flow of the system remains mark, is reliable in the whole link and is witnessed by the alliance chain technology, thereby efficiently solving the disputes among enterprises and reducing the wind control cost of the enterprises.
Description
Technical Field
The invention relates to the field of computers, in particular to an investment evidence-preserving method and system based on a blockchain technology.
Background
In order to respond to the national call and solve the financing difficulty of small and medium-sized enterprises, the funds are connected with the small micro-economy through long-time exploration, the development of the small micro-economy is efficiently supported in a collecting and dividing mode, and a high-quality small micro-store is searched through a brand enterprise cooperation store-opening mode. However, in the product in the mode, because an investment evidence storage system is lacking between a small micro enterprise and a fund party to assist business personnel in making investment decisions and optimizing, the wind control cost of the two parties cannot be controlled.
Disclosure of Invention
The invention aims to provide an investment evidence-preserving method and system based on a blockchain technology.
The investment evidence-storage method based on the blockchain technology provided by the invention comprises the following steps: the method comprises the following steps:
s1, verifying a client;
s2, the client accesses the block chain server and transmits data to the block chain server;
s3 is used for broadcasting the received data to the nodes by the blockchain server.
Preferably, the step S1 is used for verifying the client, and includes:
s11, acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a verification failure message is sent to the client.
Preferably, the step of S2 is used for the client to access the blockchain server and perform data transmission to the blockchain server, and includes:
s21, the step of encrypting the received data and generating an SM4 key by calling an SM4 symmetric key encryption interface by the client;
s22, the client side calls rsa private key interface to carry out digest signature on the SM4 key, and a signature key is generated;
s23, the client calls the certification service interface to verify the signature key.
Preferably, the step S23 is used for the client to call the certification service interface to verify the signing key, and includes:
s231 is used for the step of the blockchain server obtaining rsa public keys from the client;
s232 is used for verifying the signature key through the obtained rsa public key, if the verification is passed, S31 is executed, if the verification is failed, the step of data transmission is ended.
Preferably, the step S3 is used for broadcasting the received data to the node by the blockchain server, and includes:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending if verification fails.
S32 is a step for the blockchain server to create a block in the database and broadcast the received data to a node of the block.
Preferably, the step S32 is used for creating a block in the database by the blockchain server and broadcasting the received data to a node of the block, and further includes: and a step for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
Preferably, the investment checking method based on the blockchain technology provided by the invention further comprises the following steps: and intelligently generating contracts.
Preferably, the investment checking method based on the blockchain technology provided by the invention further comprises the following steps: and a step of transaction evidence storage.
The invention provides an investment evidence storage system based on a blockchain technology, which comprises the following modules:
s1, a module for verifying a client;
s2, a module used for accessing the client to the block chain server and transmitting data to the block chain server;
s3, a module used for broadcasting the received data to the nodes by the block chain server.
Preferably, the step S1 is a module for verifying a client, and includes:
s11, a sub-module for acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a sub-module of the verification failure message is sent to the client.
Preferably, the step S2 is a module for accessing the client to the blockchain server and transmitting data to the blockchain server, and includes:
s21, a submodule used for calling the SM4 symmetric key encryption interface by the client to encrypt the received data and generating an SM4 key;
s22, a submodule for calling rsa private key interface by the client to carry out abstract signature on the SM4 key and generating a signature key;
s23 is used for the client to call the sub-module for verifying the signing key by the certification service interface.
Preferably, the step S23 is used for the client to call a submodule for verifying the signing key by using the certification service interface, and includes:
s231 means for the blockchain server to obtain rsa public keys from the client;
s232 is configured to verify the signing key with the obtained rsa public key, and if the verification is passed, S31 is executed, and if the verification is failed, the data transmission is terminated.
Preferably, the step S3 is a module for broadcasting, by the blockchain server, the received data to the node, and includes:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending the submodule if verification fails.
S32 is for the blockchain server to create a block in the database and broadcast the received data to a sub-module of a node of the block.
Preferably, the S32 is configured to create a chunk in the database by the blockchain server, and broadcast the received data to a sub-module of a node of the chunk, and further includes: and a unit for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
Preferably, the investment and certification system based on the blockchain technology provided by the invention further comprises: and a module for intelligently generating contracts.
Preferably, the investment and certification system based on the blockchain technology provided by the invention further comprises: and a module for storing the transaction.
The investment evidence-depositing method and system based on the blockchain technology provided by the invention ensure that the evidence-depositing cannot be tampered by linking the investment identity, information, assets, transaction and behavior, can be used as a cushioning evidence when disputes are generated, ensure that the whole flow of the system remains mark, is reliable in the whole link and is witnessed by the alliance chain technology, thereby efficiently solving the disputes among enterprises and reducing the wind control cost of the enterprises.
Drawings
FIGS. 1 and 7 are schematic flow diagrams of a blockchain-based investment and certification method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating steps for authenticating a client according to an embodiment of the present invention;
FIGS. 3 and 8 are schematic diagrams illustrating steps for a client accessing a blockchain server and transmitting data to the blockchain server according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating steps for a client to invoke a certificate authority to verify a signing key according to an embodiment of the present invention;
FIG. 5 is a block chain server broadcasting received data to nodes according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the architecture of a blockchain-based investment and certification system according to the present invention;
fig. 9 is a schematic structural diagram of an intelligent generation contract according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 9, the investment and evidence method based on the blockchain technology provided by the embodiment includes the following steps:
s1, verifying a client;
s2, the client accesses the block chain server and transmits data to the block chain server;
s3 is used for broadcasting the received data to the nodes by the blockchain server.
Those skilled in the art will appreciate that the blockchain server is based on the blockchain 2.0 technical standard, based on the Gossip network protocol and the blockmemory structure, supports intelligent contracts and a consensus sequence mechanism, and realizes multi-party joining on the chain. The system can ensure that the deposit certificate cannot be tampered by linking investment identity, information, assets, transaction and behavior, can be used as a money-filling certificate when disputes are generated, ensures that the whole flow of the system remains marks through a alliance chain technology, is reliable in a whole link and has full node witness, thereby efficiently solving the disputes among enterprises and reducing the wind control cost of the enterprises. The system adopts a mode of a alliance chain to develop, is a blockchain jointly participated and managed by stores and me stores, each company or store controls one or more nodes, and only the me stores and the companies or stores can uplink data in the alliance chain.
Further, the step S1 is configured to perform verification on the client, and includes:
s11, acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a verification failure message is sent to the client.
Those skilled in the art will appreciate that the new access party can be dynamically configured by providing the access party with the merchant code, RSA public and private key, and chain account, and configuring the access party's merchant code and public and private key and chain account into the blockchain management system.
Further, the step S2 is used for accessing the client to the blockchain server and transmitting data to the blockchain server, and includes:
s21, the step of encrypting the received data and generating an SM4 key by calling an SM4 symmetric key encryption interface by the client;
s22, the client side calls rsa private key interface to carry out digest signature on the SM4 key, and a signature key is generated;
s23, the client calls the certification service interface to verify the signature key.
As will be appreciated by those skilled in the art, when a client invokes a certification service, the client encrypts its data using an SM4 symmetric key, then uses a rsa private key to sign the SM4 key in a digest, and after receiving the data, the certification service obtains the rsa public key of the access party, performs signature verification, and after passing, processes the data. And encrypting the data of the companies or the stores by adopting an asymmetric encryption mode so as to ensure the data security of the whole system, and each company or store grasps the secret key so as to prove the attribution of the data.
Further, the step S23 is used for the client to call the certification service interface to verify the signature key, and includes:
s231 is used for the step of the blockchain server obtaining rsa public keys from the client;
s232 is used for verifying the signature key through the obtained rsa public key, if the verification is passed, S31 is executed, if the verification is failed, the step of data transmission is ended.
Further, the step S3 is used for broadcasting the received data to the node by the blockchain server, and includes:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending if verification fails.
S32 is a step for the blockchain server to create a block in the database and broadcast the received data to a node of the block.
Those skilled in the art will understand that, by initiating a client (hereinafter referred to as "client") through sdk (software development kit), the client initiates access to a certificate deposit service, the certificate deposit service has a whitelist mechanism, trusted access parties can be ensured by configuring a whitelist, and a link account is verified, a node is created at the same time after access, and communication between nodes uses Gossip message protocol. The data is stored in a distributed mode, the data is distributed to a plurality of databases, the data is stored together, no matter any node has a problem, other databases can continue to operate, normal operation of the whole company product is guaranteed, single-point faults are avoided, and the probability that a network is attacked by a hacker or information is lost is reduced.
As will be appreciated by those skilled in the art, when multiple clients are connected, multiple nodes form a blocknetwork, each having blockchain structure objects for storing contracts, transaction data, etc., and receiving broadcast data from the ordered. After the certification service receives the uplink data, the certification service records the data to the blocks through a consensus mechanism, and broadcasts the blocks to other nodes in the organization based on a Gossip message protocol, so that the consistency of the block data on all the nodes is ensured.
Further, the step S32 is configured to create a block in the database by the blockchain server, and broadcast the received data to a node of the block, and further includes: and a step for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
One skilled in the art will appreciate the Ordered interface provided in Spring. The Ordered common-knowledge mechanism of the certification network is adopted, that is, all uplink request data authenticated by the certification service can be recorded on the blocks in sequence, if the block capacity is full (the block data capacity can be configured by Ordered), the Ordered module can create a new block to record data, and the client is not required to generate the block through hash operation.
Further, the investment checking method based on the blockchain technology provided by the embodiment further includes: and intelligently generating contracts.
As will be appreciated by those skilled in the art, the smart contract is a piece of java code script stored in a block on the block network, so that once issued, the contract is not tamperable, the certification service can parse the script and fill in the actual parameters of the client and execute the script, and after the smart contract is executed, the data is stored in the block and broadcast to the nodes.
Further, the investment checking method based on the blockchain technology provided by the embodiment further includes: and a step of transaction evidence storage.
Those skilled in the art will appreciate that the client will sign the bill data and then invoke the certification service, which will add the data to the ordered sequence and store it in the block and broadcast it to the nodes after the certification service receives the data and passes the verification.
Example two
The investment evidence-depositing system based on the blockchain technology provided by the embodiment comprises the following modules:
s1, a module for verifying a client;
s2, a module used for accessing the client to the block chain server and transmitting data to the block chain server;
s3, a module used for broadcasting the received data to the nodes by the block chain server.
Those skilled in the art will appreciate that the blockchain server is based on the blockchain 2.0 technical standard, based on the Gossip network protocol and the blockmemory structure, supports intelligent contracts and a consensus sequence mechanism, and realizes multi-party joining on the chain. The system can ensure that the deposit certificate cannot be tampered by linking investment identity, information, assets, transaction and behavior, can be used as a money-filling certificate when disputes are generated, ensures that the whole flow of the system remains marks through a alliance chain technology, is reliable in a whole link and has full node witness, thereby efficiently solving the disputes among enterprises and reducing the wind control cost of the enterprises. The system adopts a mode of a alliance chain to develop, is a blockchain jointly participated and managed by stores and me stores, each company or store controls one or more nodes, and only the me stores and the companies or stores can uplink data in the alliance chain.
Further, the S1 is a module for verifying a client, including:
s11, a sub-module for acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a sub-module of the verification failure message is sent to the client.
Those skilled in the art will appreciate that the new access party can be dynamically configured by providing the access party with the merchant code, RSA public and private key, and chain account, and configuring the access party's merchant code and public and private key and chain account into the blockchain management system.
Further, the S2 is a module for accessing the client to the blockchain server and transmitting data to the blockchain server, and includes:
s21, a submodule used for calling the SM4 symmetric key encryption interface by the client to encrypt the received data and generating an SM4 key;
s22, a submodule for calling rsa private key interface by the client to carry out abstract signature on the SM4 key and generating a signature key;
s23 is used for the client to call the sub-module for verifying the signing key by the certification service interface.
As will be appreciated by those skilled in the art, when a client invokes a certification service, the client encrypts its data using an SM4 symmetric key, then uses a rsa private key to sign the SM4 key in a digest, and after receiving the data, the certification service obtains the rsa public key of the access party, performs signature verification, and after passing, processes the data. And encrypting the data of the companies or the stores by adopting an asymmetric encryption mode so as to ensure the data security of the whole system, and each company or store grasps the secret key so as to prove the attribution of the data.
Further, the step S23 is used for the client to call a submodule for verifying the signing key by using the certification service interface, and includes:
s231 means for the blockchain server to obtain rsa public keys from the client;
s232 is configured to verify the signing key with the obtained rsa public key, and if the verification is passed, S31 is executed, and if the verification is failed, the data transmission is terminated.
Further, the S3 module for broadcasting, by the blockchain server, the received data to the node includes:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending the submodule if verification fails.
S32 is for the blockchain server to create a block in the database and broadcast the received data to a sub-module of a node of the block.
Those skilled in the art will understand that, by initiating a client (hereinafter referred to as "client") through sdk (software development kit), the client initiates access to a certificate deposit service, the certificate deposit service has a whitelist mechanism, trusted access parties can be ensured by configuring a whitelist, and a link account is verified, a node is created at the same time after access, and communication between nodes uses Gossip message protocol. The data is stored in a distributed mode, the data is distributed to a plurality of databases, the data is stored together, no matter any node has a problem, other databases can continue to operate, normal operation of the whole company product is guaranteed, single-point faults are avoided, and the probability that a network is attacked by a hacker or information is lost is reduced.
As will be appreciated by those skilled in the art, when multiple clients are connected, multiple nodes form a blocknetwork, each having blockchain structure objects for storing contracts, transaction data, etc., and receiving broadcast data from the ordered. After the certification service receives the uplink data, the certification service records the data to the blocks through a consensus mechanism, and broadcasts the blocks to other nodes in the organization based on a Gossip message protocol, so that the consistency of the block data on all the nodes is ensured.
Further, the S32 is configured to create a chunk in the database by the blockchain server, and broadcast the received data to a sub-module of a node of the chunk, and further includes: and a unit for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
One skilled in the art will appreciate the Ordered interface provided in Spring. The Ordered common-knowledge mechanism of the certification network is adopted, that is, all uplink request data authenticated by the certification service can be recorded on the blocks in sequence, if the block capacity is full (the block data capacity can be configured by Ordered), the Ordered module can create a new block to record data, and the client is not required to generate the block through hash operation.
Further, the investment and certification system based on the blockchain technology provided in this embodiment further includes: and a module for intelligently generating contracts.
As will be appreciated by those skilled in the art, the smart contract is a piece of java code script stored in a block on the block network, so that once issued, the contract is not tamperable, the certification service can parse the script and fill in the actual parameters of the client and execute the script, and after the smart contract is executed, the data is stored in the block and broadcast to the nodes.
Further, the investment and certification system based on the blockchain technology provided in this embodiment further includes: and a module for storing the transaction.
Those skilled in the art will appreciate that the client will sign the bill data and then invoke the certification service, which will add the data to the ordered sequence and store it in the block and broadcast it to the nodes after the certification service receives the data and passes the verification.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (16)
1. An investment evidence-preserving method based on a blockchain technology is characterized by comprising the following steps: the method comprises the following steps:
s1, verifying a client;
s2, the client accesses the block chain server and transmits data to the block chain server;
s3 is used for broadcasting the received data to the nodes by the blockchain server.
2. The blockchain technology-based investment and certification method of claim 1, wherein the step of S1 for verifying the client includes:
s11, acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a verification failure message is sent to the client.
3. The blockchain technology-based investment and certification method of claim 2, wherein the step of S2 is used for the client to access the blockchain server and perform data transmission to the blockchain server, and includes:
s21, the step of encrypting the received data and generating an SM4 key by calling an SM4 symmetric key encryption interface by the client;
s22, the client side calls rsa private key interface to carry out digest signature on the SM4 key, and a signature key is generated;
s23, the client calls the certification service interface to verify the signature key.
4. The blockchain technology-based investment and certification method of claim 3, wherein the step S23 for the client to invoke the certification service interface to verify the signing key includes:
s231 is used for the step of the blockchain server obtaining rsa public keys from the client;
s232 is used for verifying the signature key through the obtained rsa public key, if the verification is passed, S31 is executed, if the verification is failed, the step of data transmission is ended.
5. The blockchain technology-based investment and certification method of claim 4, wherein the S3 is for broadcasting the received data to the nodes by the blockchain server, comprising:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending if verification fails.
S32 is a step for the blockchain server to create a block in the database and broadcast the received data to a node of the block.
6. The blockchain technology-based investment method of claim 5, wherein the step S32 for the blockchain server to create a block in the database and broadcast the received data to a node of the block further comprises: and a step for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
7. The blockchain technology-based investment and certification method of claim 6, further comprising: and intelligently generating contracts.
8. The blockchain technology-based investment and certification method of claim 7, further comprising: and a step of transaction evidence storage.
9. An investment evidence storage system based on a blockchain technology is characterized by comprising the following modules:
s1, a module for verifying a client;
s2, a module used for accessing the client to the block chain server and transmitting data to the block chain server;
s3, a module used for broadcasting the received data to the nodes by the block chain server.
10. The blockchain technology-based investment and certification system of claim 9, wherein the S1 module for verifying a client includes:
s11, a sub-module for acquiring a merchant code, a public and private key and a chain account of the client;
s12 is used for verifying the access party according to the acquired merchant code, public and private key and chain account, if the verification is passed, S21 is executed, and if the verification is failed, a sub-module of the verification failure message is sent to the client.
11. The blockchain technology-based investment and certification system of claim 10, wherein the S2 module for the client to access the blockchain server and transmit data to the blockchain server comprises:
s21, a submodule used for calling the SM4 symmetric key encryption interface by the client to encrypt the received data and generating an SM4 key;
s22, a submodule for calling rsa private key interface by the client to carry out abstract signature on the SM4 key and generating a signature key;
s23 is used for the client to call the sub-module for verifying the signing key by the certification service interface.
12. The blockchain technology-based investment evidence system of claim 11, wherein S23 is configured to invoke a submodule of the evidence service interface to verify the signing key by the client, comprising:
s231 means for the blockchain server to obtain rsa public keys from the client;
s232 is configured to verify the signing key with the obtained rsa public key, and if the verification is passed, S31 is executed, and if the verification is failed, the data transmission is terminated.
13. The blockchain technology based investment and certification system of claim 12, wherein the S3 module for broadcasting the received data to the nodes by the blockchain server includes:
s31 is used for calling a white list interface by the client, carrying out chain account verification on the acquired client, executing S32 if verification is passed, and ending the submodule if verification fails.
S32 is for the blockchain server to create a block in the database and broadcast the received data to a sub-module of a node of the block.
14. The blockchain technology-based investment evidence system of claim 13, wherein S32 is configured to create a block in the database by the blockchain server and broadcast the received data to a sub-module of a node of the block, further comprising: and a unit for judging whether the block capacity is insufficient, if yes, calling the Ordered interface to create a new block.
15. The blockchain technology-based investment and certification system of claim 14, further comprising: and a module for intelligently generating contracts.
16. The blockchain technology-based investment and certification system of claim 15, further comprising: and a module for storing the transaction.
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